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Make proto/parser an internal package

This commit is contained in:
Dimitrij Denissenko 2016-07-02 13:52:10 +01:00
parent 5c3ab24e0a
commit 7d856c5595
24 changed files with 841 additions and 712 deletions
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9
cluster.go
View File

@ -7,6 +7,7 @@ import (
"time"
"gopkg.in/redis.v4/internal"
"gopkg.in/redis.v4/internal/errors"
"gopkg.in/redis.v4/internal/hashtag"
"gopkg.in/redis.v4/internal/pool"
)
@ -291,14 +292,14 @@ func (c *ClusterClient) Process(cmd Cmder) error {
}
// On network errors try random node.
if shouldRetry(err) {
if errors.IsRetryable(err) {
node, err = c.randomNode()
continue
}
var moved bool
var addr string
moved, ask, addr = isMovedError(err)
moved, ask, addr = errors.IsMoved(err)
if moved || ask {
master, _ := c.slotMasterNode(slot)
if moved && (master == nil || master.Addr != addr) {
@ -549,11 +550,11 @@ func (c *ClusterClient) execClusterCmds(
if err == nil {
continue
}
if isNetworkError(err) {
if errors.IsNetwork(err) {
cmd.reset()
failedCmds[nil] = append(failedCmds[nil], cmds[i:]...)
break
} else if moved, ask, addr := isMovedError(err); moved {
} else if moved, ask, addr := errors.IsMoved(err); moved {
c.lazyReloadSlots()
cmd.reset()
node, err := c.nodeByAddr(addr)

1
cluster_test.go
View File

@ -393,6 +393,7 @@ var _ = Describe("ClusterClient", func() {
for i := 0; i < 100; i++ {
wg.Add(1)
go func() {
defer GinkgoRecover()
defer wg.Done()
err := incr("key")

47
command.go
View File

@ -8,6 +8,7 @@ import (
"time"
"gopkg.in/redis.v4/internal/pool"
"gopkg.in/redis.v4/internal/proto"
)
var (
@ -55,16 +56,14 @@ func resetCmds(cmds []Cmder) {
}
func writeCmd(cn *pool.Conn, cmds ...Cmder) error {
cn.Buf = cn.Buf[:0]
cn.Wb.Reset()
for _, cmd := range cmds {
var err error
cn.Buf, err = appendArgs(cn.Buf, cmd.args())
if err != nil {
if err := cn.Wb.Append(cmd.args()); err != nil {
return err
}
}
_, err := cn.Write(cn.Buf)
_, err := cn.Write(cn.Wb.Bytes())
return err
}
@ -166,7 +165,7 @@ func (cmd *Cmd) String() string {
}
func (cmd *Cmd) readReply(cn *pool.Conn) error {
val, err := readReply(cn, sliceParser)
val, err := cn.Rd.ReadReply(sliceParser)
if err != nil {
cmd.err = err
return cmd.err
@ -211,7 +210,7 @@ func (cmd *SliceCmd) String() string {
}
func (cmd *SliceCmd) readReply(cn *pool.Conn) error {
v, err := readArrayReply(cn, sliceParser)
v, err := cn.Rd.ReadArrayReply(sliceParser)
if err != nil {
cmd.err = err
return err
@ -251,7 +250,7 @@ func (cmd *StatusCmd) String() string {
}
func (cmd *StatusCmd) readReply(cn *pool.Conn) error {
cmd.val, cmd.err = readStringReply(cn)
cmd.val, cmd.err = cn.Rd.ReadStringReply()
return cmd.err
}
@ -286,7 +285,7 @@ func (cmd *IntCmd) String() string {
}
func (cmd *IntCmd) readReply(cn *pool.Conn) error {
cmd.val, cmd.err = readIntReply(cn)
cmd.val, cmd.err = cn.Rd.ReadIntReply()
return cmd.err
}
@ -325,7 +324,7 @@ func (cmd *DurationCmd) String() string {
}
func (cmd *DurationCmd) readReply(cn *pool.Conn) error {
n, err := readIntReply(cn)
n, err := cn.Rd.ReadIntReply()
if err != nil {
cmd.err = err
return err
@ -367,7 +366,7 @@ func (cmd *BoolCmd) String() string {
var ok = []byte("OK")
func (cmd *BoolCmd) readReply(cn *pool.Conn) error {
v, err := readReply(cn, nil)
v, err := cn.Rd.ReadReply(nil)
// `SET key value NX` returns nil when key already exists. But
// `SETNX key value` returns bool (0/1). So convert nil to bool.
// TODO: is this okay?
@ -410,7 +409,7 @@ func (cmd *StringCmd) reset() {
}
func (cmd *StringCmd) Val() string {
return bytesToString(cmd.val)
return string(cmd.val)
}
func (cmd *StringCmd) Result() (string, error) {
@ -446,7 +445,7 @@ func (cmd *StringCmd) Scan(val interface{}) error {
if cmd.err != nil {
return cmd.err
}
return scan(cmd.val, val)
return proto.Scan(cmd.val, val)
}
func (cmd *StringCmd) String() string {
@ -454,7 +453,7 @@ func (cmd *StringCmd) String() string {
}
func (cmd *StringCmd) readReply(cn *pool.Conn) error {
b, err := readBytesReply(cn)
b, err := cn.Rd.ReadBytesReply()
if err != nil {
cmd.err = err
return err
@ -498,7 +497,7 @@ func (cmd *FloatCmd) String() string {
}
func (cmd *FloatCmd) readReply(cn *pool.Conn) error {
cmd.val, cmd.err = readFloatReply(cn)
cmd.val, cmd.err = cn.Rd.ReadFloatReply()
return cmd.err
}
@ -533,7 +532,7 @@ func (cmd *StringSliceCmd) String() string {
}
func (cmd *StringSliceCmd) readReply(cn *pool.Conn) error {
v, err := readArrayReply(cn, stringSliceParser)
v, err := cn.Rd.ReadArrayReply(stringSliceParser)
if err != nil {
cmd.err = err
return err
@ -573,7 +572,7 @@ func (cmd *BoolSliceCmd) String() string {
}
func (cmd *BoolSliceCmd) readReply(cn *pool.Conn) error {
v, err := readArrayReply(cn, boolSliceParser)
v, err := cn.Rd.ReadArrayReply(boolSliceParser)
if err != nil {
cmd.err = err
return err
@ -613,7 +612,7 @@ func (cmd *StringStringMapCmd) String() string {
}
func (cmd *StringStringMapCmd) readReply(cn *pool.Conn) error {
v, err := readArrayReply(cn, stringStringMapParser)
v, err := cn.Rd.ReadArrayReply(stringStringMapParser)
if err != nil {
cmd.err = err
return err
@ -653,7 +652,7 @@ func (cmd *StringIntMapCmd) reset() {
}
func (cmd *StringIntMapCmd) readReply(cn *pool.Conn) error {
v, err := readArrayReply(cn, stringIntMapParser)
v, err := cn.Rd.ReadArrayReply(stringIntMapParser)
if err != nil {
cmd.err = err
return err
@ -693,7 +692,7 @@ func (cmd *ZSliceCmd) String() string {
}
func (cmd *ZSliceCmd) readReply(cn *pool.Conn) error {
v, err := readArrayReply(cn, zSliceParser)
v, err := cn.Rd.ReadArrayReply(zSliceParser)
if err != nil {
cmd.err = err
return err
@ -737,7 +736,7 @@ func (cmd *ScanCmd) String() string {
}
func (cmd *ScanCmd) readReply(cn *pool.Conn) error {
page, cursor, err := readScanReply(cn)
page, cursor, err := cn.Rd.ReadScanReply()
if err != nil {
cmd.err = err
return cmd.err
@ -789,7 +788,7 @@ func (cmd *ClusterSlotsCmd) reset() {
}
func (cmd *ClusterSlotsCmd) readReply(cn *pool.Conn) error {
v, err := readArrayReply(cn, clusterSlotsParser)
v, err := cn.Rd.ReadArrayReply(clusterSlotsParser)
if err != nil {
cmd.err = err
return err
@ -874,7 +873,7 @@ func (cmd *GeoLocationCmd) String() string {
}
func (cmd *GeoLocationCmd) readReply(cn *pool.Conn) error {
reply, err := readArrayReply(cn, newGeoLocationSliceParser(cmd.q))
reply, err := cn.Rd.ReadArrayReply(newGeoLocationSliceParser(cmd.q))
if err != nil {
cmd.err = err
return err
@ -924,7 +923,7 @@ func (cmd *CommandsInfoCmd) reset() {
}
func (cmd *CommandsInfoCmd) readReply(cn *pool.Conn) error {
v, err := readArrayReply(cn, commandInfoSliceParser)
v, err := cn.Rd.ReadArrayReply(commandInfoSliceParser)
if err != nil {
cmd.err = err
return err

19
commands.go
View File

@ -6,20 +6,9 @@ import (
"time"
"gopkg.in/redis.v4/internal"
"gopkg.in/redis.v4/internal/errors"
)
func formatInt(i int64) string {
return strconv.FormatInt(i, 10)
}
func formatUint(i uint64) string {
return strconv.FormatUint(i, 10)
}
func formatFloat(f float64) string {
return strconv.FormatFloat(f, 'f', -1, 64)
}
func readTimeout(timeout time.Duration) time.Duration {
if timeout == 0 {
return 0
@ -38,7 +27,7 @@ func formatMs(dur time.Duration) string {
dur, time.Millisecond,
)
}
return formatInt(int64(dur / time.Millisecond))
return strconv.FormatInt(int64(dur/time.Millisecond), 10)
}
func formatSec(dur time.Duration) string {
@ -48,7 +37,7 @@ func formatSec(dur time.Duration) string {
dur, time.Second,
)
}
return formatInt(int64(dur / time.Second))
return strconv.FormatInt(int64(dur/time.Second), 10)
}
type cmdable struct {
@ -1515,7 +1504,7 @@ func (c *cmdable) shutdown(modifier string) *StatusCmd {
}
} else {
// Server did not quit. String reply contains the reason.
cmd.err = errorf(cmd.val)
cmd.err = errors.RedisError(cmd.val)
cmd.val = ""
}
return cmd

81
error.go
View File

@ -1,81 +0,0 @@
package redis
import (
"fmt"
"io"
"net"
"strings"
)
// Redis nil reply, .e.g. when key does not exist.
var Nil = errorf("redis: nil")
// Redis transaction failed.
var TxFailedErr = errorf("redis: transaction failed")
type redisError struct {
s string
}
func errorf(s string, args ...interface{}) redisError {
return redisError{s: fmt.Sprintf(s, args...)}
}
func (err redisError) Error() string {
return err.s
}
func isInternalError(err error) bool {
_, ok := err.(redisError)
return ok
}
func isNetworkError(err error) bool {
if err == io.EOF {
return true
}
_, ok := err.(net.Error)
return ok
}
func isBadConn(err error, allowTimeout bool) bool {
if err == nil {
return false
}
if isInternalError(err) {
return false
}
if allowTimeout {
if netErr, ok := err.(net.Error); ok && netErr.Timeout() {
return false
}
}
return true
}
func isMovedError(err error) (moved bool, ask bool, addr string) {
if _, ok := err.(redisError); !ok {
return
}
s := err.Error()
if strings.HasPrefix(s, "MOVED ") {
moved = true
} else if strings.HasPrefix(s, "ASK ") {
ask = true
} else {
return
}
ind := strings.LastIndexByte(s, ' ')
if ind == -1 {
return false, false, ""
}
addr = s[ind+1:]
return
}
// shouldRetry reports whether failed command should be retried.
func shouldRetry(err error) bool {
return isNetworkError(err)
}

67
internal/errors/errors.go Normal file
View File

@ -0,0 +1,67 @@
package errors
import (
"io"
"net"
"strings"
)
const Nil = RedisError("redis: nil")
type RedisError string
func (e RedisError) Error() string { return string(e) }
func IsRetryable(err error) bool {
return IsNetwork(err)
}
func IsInternal(err error) bool {
_, ok := err.(RedisError)
return ok
}
func IsNetwork(err error) bool {
if err == io.EOF {
return true
}
_, ok := err.(net.Error)
return ok
}
func IsBadConn(err error, allowTimeout bool) bool {
if err == nil {
return false
}
if IsInternal(err) {
return false
}
if allowTimeout {
if netErr, ok := err.(net.Error); ok && netErr.Timeout() {
return false
}
}
return true
}
func IsMoved(err error) (moved bool, ask bool, addr string) {
if !IsInternal(err) {
return
}
s := err.Error()
if strings.HasPrefix(s, "MOVED ") {
moved = true
} else if strings.HasPrefix(s, "ASK ") {
ask = true
} else {
return
}
ind := strings.LastIndexByte(s, ' ')
if ind == -1 {
return false, false, ""
}
addr = s[ind+1:]
return
}

23
internal/pool/conn.go
View File

@ -1,10 +1,10 @@
package pool
import (
"bufio"
"io"
"net"
"time"
"gopkg.in/redis.v4/internal/proto"
)
const defaultBufSize = 4096
@ -13,8 +13,8 @@ var noDeadline = time.Time{}
type Conn struct {
NetConn net.Conn
Rd *bufio.Reader
Buf []byte
Rd *proto.Reader
Wb *proto.WriteBuffer
Inited bool
UsedAt time.Time
@ -26,11 +26,11 @@ type Conn struct {
func NewConn(netConn net.Conn) *Conn {
cn := &Conn{
NetConn: netConn,
Buf: make([]byte, defaultBufSize),
Wb: proto.NewWriteBuffer(),
UsedAt: time.Now(),
}
cn.Rd = bufio.NewReader(cn)
cn.Rd = proto.NewReader(cn)
return cn
}
@ -62,17 +62,6 @@ func (cn *Conn) RemoteAddr() net.Addr {
return cn.NetConn.RemoteAddr()
}
func (cn *Conn) ReadN(n int) ([]byte, error) {
if d := n - cap(cn.Buf); d > 0 {
cn.Buf = cn.Buf[:cap(cn.Buf)]
cn.Buf = append(cn.Buf, make([]byte, d)...)
} else {
cn.Buf = cn.Buf[:n]
}
_, err := io.ReadFull(cn.Rd, cn.Buf)
return cn.Buf, err
}
func (cn *Conn) Close() error {
return cn.NetConn.Close()
}

5
internal/pool/pool.go
View File

@ -205,9 +205,8 @@ func (p *ConnPool) Get() (*Conn, error) {
}
func (p *ConnPool) Put(cn *Conn) error {
if cn.Rd.Buffered() != 0 {
b, _ := cn.Rd.Peek(cn.Rd.Buffered())
err := fmt.Errorf("connection has unread data: %q", b)
if data := cn.Rd.PeekBuffered(); data != nil {
err := fmt.Errorf("connection has unread data: %q", data)
internal.Logf(err.Error())
return p.Remove(cn, err)
}

122
internal/proto/proto.go Normal file
View File

@ -0,0 +1,122 @@
package proto
import (
"encoding"
"fmt"
"strconv"
"gopkg.in/redis.v4/internal/errors"
)
const (
ErrorReply = '-'
StatusReply = '+'
IntReply = ':'
StringReply = '$'
ArrayReply = '*'
)
const defaultBufSize = 4096
var errScanNil = errors.RedisError("redis: Scan(nil)")
func Scan(b []byte, val interface{}) error {
switch v := val.(type) {
case nil:
return errScanNil
case *string:
*v = string(b)
return nil
case *[]byte:
*v = b
return nil
case *int:
var err error
*v, err = strconv.Atoi(string(b))
return err
case *int8:
n, err := strconv.ParseInt(string(b), 10, 8)
if err != nil {
return err
}
*v = int8(n)
return nil
case *int16:
n, err := strconv.ParseInt(string(b), 10, 16)
if err != nil {
return err
}
*v = int16(n)
return nil
case *int32:
n, err := strconv.ParseInt(string(b), 10, 32)
if err != nil {
return err
}
*v = int32(n)
return nil
case *int64:
n, err := strconv.ParseInt(string(b), 10, 64)
if err != nil {
return err
}
*v = n
return nil
case *uint:
n, err := strconv.ParseUint(string(b), 10, 64)
if err != nil {
return err
}
*v = uint(n)
return nil
case *uint8:
n, err := strconv.ParseUint(string(b), 10, 8)
if err != nil {
return err
}
*v = uint8(n)
return nil
case *uint16:
n, err := strconv.ParseUint(string(b), 10, 16)
if err != nil {
return err
}
*v = uint16(n)
return nil
case *uint32:
n, err := strconv.ParseUint(string(b), 10, 32)
if err != nil {
return err
}
*v = uint32(n)
return nil
case *uint64:
n, err := strconv.ParseUint(string(b), 10, 64)
if err != nil {
return err
}
*v = n
return nil
case *float32:
n, err := strconv.ParseFloat(string(b), 32)
if err != nil {
return err
}
*v = float32(n)
return err
case *float64:
var err error
*v, err = strconv.ParseFloat(string(b), 64)
return err
case *bool:
*v = len(b) == 1 && b[0] == '1'
return nil
default:
if bu, ok := val.(encoding.BinaryUnmarshaler); ok {
return bu.UnmarshalBinary(b)
}
err := fmt.Errorf(
"redis: can't unmarshal %T (consider implementing BinaryUnmarshaler)", val)
return err
}
}

13
internal/proto/proto_test.go Normal file
View File

@ -0,0 +1,13 @@
package proto_test
import (
"testing"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
)
func TestGinkgoSuite(t *testing.T) {
RegisterFailHandler(Fail)
RunSpecs(t, "proto")
}

264
internal/proto/reader.go Normal file
View File

@ -0,0 +1,264 @@
package proto
import (
"bufio"
"errors"
"fmt"
"io"
"strconv"
ierrors "gopkg.in/redis.v4/internal/errors"
)
type MultiBulkParse func(*Reader, int64) (interface{}, error)
var errEmptyReply = errors.New("redis: reply is empty")
type Reader struct {
src *bufio.Reader
buf []byte
}
func NewReader(rd io.Reader) *Reader {
return &Reader{
src: bufio.NewReader(rd),
buf: make([]byte, 0, defaultBufSize),
}
}
func (p *Reader) PeekBuffered() []byte {
if n := p.src.Buffered(); n != 0 {
b, _ := p.src.Peek(n)
return b
}
return nil
}
func (p *Reader) ReadN(n int) ([]byte, error) {
// grow internal buffer, if necessary
if d := n - cap(p.buf); d > 0 {
p.buf = p.buf[:cap(p.buf)]
p.buf = append(p.buf, make([]byte, d)...)
} else {
p.buf = p.buf[:n]
}
_, err := io.ReadFull(p.src, p.buf)
return p.buf, err
}
func (p *Reader) ReadLine() ([]byte, error) {
line, isPrefix, err := p.src.ReadLine()
if err != nil {
return nil, err
}
if isPrefix {
return nil, bufio.ErrBufferFull
}
if len(line) == 0 {
return nil, errEmptyReply
}
if isNilReply(line) {
return nil, ierrors.Nil
}
return line, nil
}
func (p *Reader) ReadReply(m MultiBulkParse) (interface{}, error) {
line, err := p.ReadLine()
if err != nil {
return nil, err
}
switch line[0] {
case ErrorReply:
return nil, parseErrorValue(line)
case StatusReply:
return parseStatusValue(line)
case IntReply:
return parseIntValue(line)
case StringReply:
return p.parseBytesValue(line)
case ArrayReply:
n, err := parseArrayLen(line)
if err != nil {
return nil, err
}
return m(p, n)
}
return nil, fmt.Errorf("redis: can't parse %.100q", line)
}
func (p *Reader) ReadIntReply() (int64, error) {
line, err := p.ReadLine()
if err != nil {
return 0, err
}
switch line[0] {
case ErrorReply:
return 0, parseErrorValue(line)
case IntReply:
return parseIntValue(line)
default:
return 0, fmt.Errorf("redis: can't parse int reply: %.100q", line)
}
}
func (p *Reader) ReadBytesReply() ([]byte, error) {
line, err := p.ReadLine()
if err != nil {
return nil, err
}
switch line[0] {
case ErrorReply:
return nil, parseErrorValue(line)
case StringReply:
return p.parseBytesValue(line)
case StatusReply:
return parseStatusValue(line)
default:
return nil, fmt.Errorf("redis: can't parse string reply: %.100q", line)
}
}
func (p *Reader) ReadStringReply() (string, error) {
b, err := p.ReadBytesReply()
if err != nil {
return "", err
}
return string(b), nil
}
func (p *Reader) ReadFloatReply() (float64, error) {
s, err := p.ReadStringReply()
if err != nil {
return 0, err
}
return strconv.ParseFloat(s, 64)
}
func (p *Reader) ReadArrayReply(m MultiBulkParse) (interface{}, error) {
line, err := p.ReadLine()
if err != nil {
return nil, err
}
switch line[0] {
case ErrorReply:
return nil, parseErrorValue(line)
case ArrayReply:
n, err := parseArrayLen(line)
if err != nil {
return nil, err
}
return m(p, n)
default:
return nil, fmt.Errorf("redis: can't parse array reply: %.100q", line)
}
}
func (p *Reader) ReadArrayLen() (int64, error) {
line, err := p.ReadLine()
if err != nil {
return 0, err
}
switch line[0] {
case ErrorReply:
return 0, parseErrorValue(line)
case ArrayReply:
return parseArrayLen(line)
default:
return 0, fmt.Errorf("redis: can't parse array reply: %.100q", line)
}
}
func (p *Reader) ReadScanReply() ([]string, uint64, error) {
n, err := p.ReadArrayLen()
if err != nil {
return nil, 0, err
}
if n != 2 {
return nil, 0, fmt.Errorf("redis: got %d elements in scan reply, expected 2", n)
}
s, err := p.ReadStringReply()
if err != nil {
return nil, 0, err
}
cursor, err := strconv.ParseUint(s, 10, 64)
if err != nil {
return nil, 0, err
}
n, err = p.ReadArrayLen()
if err != nil {
return nil, 0, err
}
keys := make([]string, n)
for i := int64(0); i < n; i++ {
key, err := p.ReadStringReply()
if err != nil {
return nil, 0, err
}
keys[i] = key
}
return keys, cursor, err
}
func (p *Reader) parseBytesValue(line []byte) ([]byte, error) {
if isNilReply(line) {
return nil, ierrors.Nil
}
replyLen, err := strconv.Atoi(string(line[1:]))
if err != nil {
return nil, err
}
b, err := p.ReadN(replyLen + 2)
if err != nil {
return nil, err
}
return b[:replyLen], nil
}
// --------------------------------------------------------------------
func formatInt(n int64) string {
return strconv.FormatInt(n, 10)
}
func formatUint(u uint64) string {
return strconv.FormatUint(u, 10)
}
func formatFloat(f float64) string {
return strconv.FormatFloat(f, 'f', -1, 64)
}
func isNilReply(b []byte) bool {
return len(b) == 3 &&
(b[0] == StringReply || b[0] == ArrayReply) &&
b[1] == '-' && b[2] == '1'
}
func parseErrorValue(line []byte) error {
return ierrors.RedisError(string(line[1:]))
}
func parseStatusValue(line []byte) ([]byte, error) {
return line[1:], nil
}
func parseIntValue(line []byte) (int64, error) {
return strconv.ParseInt(string(line[1:]), 10, 64)
}
func parseArrayLen(line []byte) (int64, error) {
if isNilReply(line) {
return 0, ierrors.Nil
}
return parseIntValue(line)
}

86
internal/proto/reader_test.go Normal file
View File

@ -0,0 +1,86 @@
package proto_test
import (
"bytes"
"strings"
"testing"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
"gopkg.in/redis.v4/internal/proto"
)
var _ = Describe("Reader", func() {
It("should read n bytes", func() {
data, err := proto.NewReader(strings.NewReader("ABCDEFGHIJKLMNO")).ReadN(10)
Expect(err).NotTo(HaveOccurred())
Expect(len(data)).To(Equal(10))
Expect(string(data)).To(Equal("ABCDEFGHIJ"))
data, err = proto.NewReader(strings.NewReader(strings.Repeat("x", 8192))).ReadN(6000)
Expect(err).NotTo(HaveOccurred())
Expect(len(data)).To(Equal(6000))
})
It("should read lines", func() {
p := proto.NewReader(strings.NewReader("$5\r\nhello\r\n"))
data, err := p.ReadLine()
Expect(err).NotTo(HaveOccurred())
Expect(string(data)).To(Equal("$5"))
data, err = p.ReadLine()
Expect(err).NotTo(HaveOccurred())
Expect(string(data)).To(Equal("hello"))
})
})
func BenchmarkReader_ParseReply_Status(b *testing.B) {
benchmarkParseReply(b, "+OK\r\n", nil, false)
}
func BenchmarkReader_ParseReply_Int(b *testing.B) {
benchmarkParseReply(b, ":1\r\n", nil, false)
}
func BenchmarkReader_ParseReply_Error(b *testing.B) {
benchmarkParseReply(b, "-Error message\r\n", nil, true)
}
func BenchmarkReader_ParseReply_String(b *testing.B) {
benchmarkParseReply(b, "$5\r\nhello\r\n", nil, false)
}
func BenchmarkReader_ParseReply_Slice(b *testing.B) {
benchmarkParseReply(b, "*2\r\n$5\r\nhello\r\n$5\r\nworld\r\n", multiBulkParse, false)
}
func benchmarkParseReply(b *testing.B, reply string, m proto.MultiBulkParse, wanterr bool) {
buf := &bytes.Buffer{}
for i := 0; i < b.N; i++ {
buf.WriteString(reply)
}
p := proto.NewReader(buf)
b.ResetTimer()
for i := 0; i < b.N; i++ {
_, err := p.ReadReply(m)
if !wanterr && err != nil {
b.Fatal(err)
}
}
}
func multiBulkParse(p *proto.Reader, n int64) (interface{}, error) {
vv := make([]interface{}, 0, n)
for i := int64(0); i < n; i++ {
v, err := p.ReadReply(multiBulkParse)
if err != nil {
return nil, err
}
vv = append(vv, v)
}
return vv, nil
}

101
internal/proto/writebuffer.go Normal file
View File

@ -0,0 +1,101 @@
package proto
import (
"encoding"
"fmt"
"strconv"
)
type WriteBuffer struct{ b []byte }
func NewWriteBuffer() *WriteBuffer {
return &WriteBuffer{
b: make([]byte, 0, defaultBufSize),
}
}
func (w *WriteBuffer) Len() int { return len(w.b) }
func (w *WriteBuffer) Bytes() []byte { return w.b }
func (w *WriteBuffer) Reset() { w.b = w.b[:0] }
func (w *WriteBuffer) Append(args []interface{}) error {
w.b = append(w.b, ArrayReply)
w.b = strconv.AppendUint(w.b, uint64(len(args)), 10)
w.b = append(w.b, '\r', '\n')
for _, arg := range args {
if err := w.append(arg); err != nil {
return err
}
}
return nil
}
func (w *WriteBuffer) append(val interface{}) error {
switch v := val.(type) {
case nil:
w.AppendString("")
case string:
w.AppendString(v)
case []byte:
w.AppendBytes(v)
case int:
w.AppendString(formatInt(int64(v)))
case int8:
w.AppendString(formatInt(int64(v)))
case int16:
w.AppendString(formatInt(int64(v)))
case int32:
w.AppendString(formatInt(int64(v)))
case int64:
w.AppendString(formatInt(v))
case uint:
w.AppendString(formatUint(uint64(v)))
case uint8:
w.AppendString(formatUint(uint64(v)))
case uint16:
w.AppendString(formatUint(uint64(v)))
case uint32:
w.AppendString(formatUint(uint64(v)))
case uint64:
w.AppendString(formatUint(v))
case float32:
w.AppendString(formatFloat(float64(v)))
case float64:
w.AppendString(formatFloat(v))
case bool:
if v {
w.AppendString("1")
} else {
w.AppendString("0")
}
default:
if bm, ok := val.(encoding.BinaryMarshaler); ok {
bb, err := bm.MarshalBinary()
if err != nil {
return err
}
w.AppendBytes(bb)
} else {
return fmt.Errorf(
"redis: can't marshal %T (consider implementing encoding.BinaryMarshaler)", val)
}
}
return nil
}
func (w *WriteBuffer) AppendString(s string) {
w.b = append(w.b, StringReply)
w.b = strconv.AppendUint(w.b, uint64(len(s)), 10)
w.b = append(w.b, '\r', '\n')
w.b = append(w.b, s...)
w.b = append(w.b, '\r', '\n')
}
func (w *WriteBuffer) AppendBytes(p []byte) {
w.b = append(w.b, StringReply)
w.b = strconv.AppendUint(w.b, uint64(len(p)), 10)
w.b = append(w.b, '\r', '\n')
w.b = append(w.b, p...)
w.b = append(w.b, '\r', '\n')
}

62
internal/proto/writebuffer_test.go Normal file
View File

@ -0,0 +1,62 @@
package proto_test
import (
"testing"
"time"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
"gopkg.in/redis.v4/internal/proto"
)
var _ = Describe("WriteBuffer", func() {
var buf *proto.WriteBuffer
BeforeEach(func() {
buf = proto.NewWriteBuffer()
})
It("should reset", func() {
buf.AppendString("string")
Expect(buf.Len()).To(Equal(12))
buf.Reset()
Expect(buf.Len()).To(Equal(0))
})
It("should append args", func() {
err := buf.Append([]interface{}{
"string",
12,
34.56,
[]byte{'b', 'y', 't', 'e', 's'},
true,
nil,
})
Expect(err).NotTo(HaveOccurred())
Expect(buf.Bytes()).To(Equal([]byte("*6\r\n" +
"$6\r\nstring\r\n" +
"$2\r\n12\r\n" +
"$5\r\n34.56\r\n" +
"$5\r\nbytes\r\n" +
"$1\r\n1\r\n" +
"$0\r\n" +
"\r\n")))
})
It("should append marshalable args", func() {
err := buf.Append([]interface{}{time.Unix(1414141414, 0)})
Expect(err).NotTo(HaveOccurred())
Expect(buf.Len()).To(Equal(26))
})
})
func BenchmarkWriteBuffer_Append(b *testing.B) {
buf := proto.NewWriteBuffer()
args := []interface{}{"hello", "world", "foo", "bar"}
for i := 0; i < b.N; i++ {
buf.Append(args)
buf.Reset()
}
}

2
main_test.go
View File

@ -136,6 +136,8 @@ func eventually(fn func() error, timeout time.Duration) error {
done := make(chan struct{})
go func() {
defer GinkgoRecover()
for atomic.LoadInt32(&exit) == 0 {
err := fn()
if err == nil {

546
parser.go
View File

@ -1,446 +1,18 @@
package redis
import (
"bufio"
"errors"
"fmt"
"net"
"strconv"
"gopkg.in/redis.v4/internal/pool"
"gopkg.in/redis.v4/internal/proto"
)
const (
errorReply = '-'
statusReply = '+'
intReply = ':'
stringReply = '$'
arrayReply = '*'
)
type multiBulkParser func(cn *pool.Conn, n int64) (interface{}, error)
var errEmptyReply = errors.New("redis: reply is empty")
//------------------------------------------------------------------------------
// Copy of encoding.BinaryMarshaler.
type binaryMarshaler interface {
MarshalBinary() (data []byte, err error)
}
// Copy of encoding.BinaryUnmarshaler.
type binaryUnmarshaler interface {
UnmarshalBinary(data []byte) error
}
func appendString(b []byte, s string) []byte {
b = append(b, '$')
b = strconv.AppendUint(b, uint64(len(s)), 10)
b = append(b, '\r', '\n')
b = append(b, s...)
b = append(b, '\r', '\n')
return b
}
func appendBytes(b, bb []byte) []byte {
b = append(b, '$')
b = strconv.AppendUint(b, uint64(len(bb)), 10)
b = append(b, '\r', '\n')
b = append(b, bb...)
b = append(b, '\r', '\n')
return b
}
func appendArg(b []byte, val interface{}) ([]byte, error) {
switch v := val.(type) {
case nil:
b = appendString(b, "")
case string:
b = appendString(b, v)
case []byte:
b = appendBytes(b, v)
case int:
b = appendString(b, formatInt(int64(v)))
case int8:
b = appendString(b, formatInt(int64(v)))
case int16:
b = appendString(b, formatInt(int64(v)))
case int32:
b = appendString(b, formatInt(int64(v)))
case int64:
b = appendString(b, formatInt(v))
case uint:
b = appendString(b, formatUint(uint64(v)))
case uint8:
b = appendString(b, formatUint(uint64(v)))
case uint16:
b = appendString(b, formatUint(uint64(v)))
case uint32:
b = appendString(b, formatUint(uint64(v)))
case uint64:
b = appendString(b, formatUint(v))
case float32:
b = appendString(b, formatFloat(float64(v)))
case float64:
b = appendString(b, formatFloat(v))
case bool:
if v {
b = appendString(b, "1")
} else {
b = appendString(b, "0")
}
default:
if bm, ok := val.(binaryMarshaler); ok {
bb, err := bm.MarshalBinary()
if err != nil {
return nil, err
}
b = appendBytes(b, bb)
} else {
err := fmt.Errorf(
"redis: can't marshal %T (consider implementing BinaryMarshaler)", val)
return nil, err
}
}
return b, nil
}
func appendArgs(b []byte, args []interface{}) ([]byte, error) {
b = append(b, arrayReply)
b = strconv.AppendUint(b, uint64(len(args)), 10)
b = append(b, '\r', '\n')
for _, arg := range args {
var err error
b, err = appendArg(b, arg)
if err != nil {
return nil, err
}
}
return b, nil
}
func scan(b []byte, val interface{}) error {
switch v := val.(type) {
case nil:
return errorf("redis: Scan(nil)")
case *string:
*v = bytesToString(b)
return nil
case *[]byte:
*v = b
return nil
case *int:
var err error
*v, err = strconv.Atoi(bytesToString(b))
return err
case *int8:
n, err := strconv.ParseInt(bytesToString(b), 10, 8)
if err != nil {
return err
}
*v = int8(n)
return nil
case *int16:
n, err := strconv.ParseInt(bytesToString(b), 10, 16)
if err != nil {
return err
}
*v = int16(n)
return nil
case *int32:
n, err := strconv.ParseInt(bytesToString(b), 10, 16)
if err != nil {
return err
}
*v = int32(n)
return nil
case *int64:
n, err := strconv.ParseInt(bytesToString(b), 10, 64)
if err != nil {
return err
}
*v = n
return nil
case *uint:
n, err := strconv.ParseUint(bytesToString(b), 10, 64)
if err != nil {
return err
}
*v = uint(n)
return nil
case *uint8:
n, err := strconv.ParseUint(bytesToString(b), 10, 8)
if err != nil {
return err
}
*v = uint8(n)
return nil
case *uint16:
n, err := strconv.ParseUint(bytesToString(b), 10, 16)
if err != nil {
return err
}
*v = uint16(n)
return nil
case *uint32:
n, err := strconv.ParseUint(bytesToString(b), 10, 32)
if err != nil {
return err
}
*v = uint32(n)
return nil
case *uint64:
n, err := strconv.ParseUint(bytesToString(b), 10, 64)
if err != nil {
return err
}
*v = n
return nil
case *float32:
n, err := strconv.ParseFloat(bytesToString(b), 32)
if err != nil {
return err
}
*v = float32(n)
return err
case *float64:
var err error
*v, err = strconv.ParseFloat(bytesToString(b), 64)
return err
case *bool:
*v = len(b) == 1 && b[0] == '1'
return nil
default:
if bu, ok := val.(binaryUnmarshaler); ok {
return bu.UnmarshalBinary(b)
}
err := fmt.Errorf(
"redis: can't unmarshal %T (consider implementing BinaryUnmarshaler)", val)
return err
}
}
//------------------------------------------------------------------------------
func readLine(cn *pool.Conn) ([]byte, error) {
line, isPrefix, err := cn.Rd.ReadLine()
if err != nil {
return nil, err
}
if isPrefix {
return nil, bufio.ErrBufferFull
}
if len(line) == 0 {
return nil, errEmptyReply
}
if isNilReply(line) {
return nil, Nil
}
return line, nil
}
func isNilReply(b []byte) bool {
return len(b) == 3 &&
(b[0] == stringReply || b[0] == arrayReply) &&
b[1] == '-' && b[2] == '1'
}
//------------------------------------------------------------------------------
func parseErrorReply(cn *pool.Conn, line []byte) error {
return errorf(string(line[1:]))
}
func parseStatusReply(cn *pool.Conn, line []byte) ([]byte, error) {
return line[1:], nil
}
func parseIntReply(cn *pool.Conn, line []byte) (int64, error) {
n, err := strconv.ParseInt(bytesToString(line[1:]), 10, 64)
if err != nil {
return 0, err
}
return n, nil
}
func readIntReply(cn *pool.Conn) (int64, error) {
line, err := readLine(cn)
if err != nil {
return 0, err
}
switch line[0] {
case errorReply:
return 0, parseErrorReply(cn, line)
case intReply:
return parseIntReply(cn, line)
default:
return 0, fmt.Errorf("redis: can't parse int reply: %.100q", line)
}
}
func parseBytesReply(cn *pool.Conn, line []byte) ([]byte, error) {
if isNilReply(line) {
return nil, Nil
}
replyLen, err := strconv.Atoi(bytesToString(line[1:]))
if err != nil {
return nil, err
}
b, err := cn.ReadN(replyLen + 2)
if err != nil {
return nil, err
}
return b[:replyLen], nil
}
func readBytesReply(cn *pool.Conn) ([]byte, error) {
line, err := readLine(cn)
if err != nil {
return nil, err
}
switch line[0] {
case errorReply:
return nil, parseErrorReply(cn, line)
case stringReply:
return parseBytesReply(cn, line)
case statusReply:
return parseStatusReply(cn, line)
default:
return nil, fmt.Errorf("redis: can't parse string reply: %.100q", line)
}
}
func readStringReply(cn *pool.Conn) (string, error) {
b, err := readBytesReply(cn)
if err != nil {
return "", err
}
return string(b), nil
}
func readFloatReply(cn *pool.Conn) (float64, error) {
b, err := readBytesReply(cn)
if err != nil {
return 0, err
}
return strconv.ParseFloat(bytesToString(b), 64)
}
func parseArrayHeader(cn *pool.Conn, line []byte) (int64, error) {
if isNilReply(line) {
return 0, Nil
}
n, err := strconv.ParseInt(bytesToString(line[1:]), 10, 64)
if err != nil {
return 0, err
}
return n, nil
}
func parseArrayReply(cn *pool.Conn, p multiBulkParser, line []byte) (interface{}, error) {
n, err := parseArrayHeader(cn, line)
if err != nil {
return nil, err
}
return p(cn, n)
}
func readArrayHeader(cn *pool.Conn) (int64, error) {
line, err := readLine(cn)
if err != nil {
return 0, err
}
switch line[0] {
case errorReply:
return 0, parseErrorReply(cn, line)
case arrayReply:
return parseArrayHeader(cn, line)
default:
return 0, fmt.Errorf("redis: can't parse array reply: %.100q", line)
}
}
func readArrayReply(cn *pool.Conn, p multiBulkParser) (interface{}, error) {
line, err := readLine(cn)
if err != nil {
return nil, err
}
switch line[0] {
case errorReply:
return nil, parseErrorReply(cn, line)
case arrayReply:
return parseArrayReply(cn, p, line)
default:
return nil, fmt.Errorf("redis: can't parse array reply: %.100q", line)
}
}
func readReply(cn *pool.Conn, p multiBulkParser) (interface{}, error) {
line, err := readLine(cn)
if err != nil {
return nil, err
}
switch line[0] {
case errorReply:
return nil, parseErrorReply(cn, line)
case statusReply:
return parseStatusReply(cn, line)
case intReply:
return parseIntReply(cn, line)
case stringReply:
return parseBytesReply(cn, line)
case arrayReply:
return parseArrayReply(cn, p, line)
}
return nil, fmt.Errorf("redis: can't parse %.100q", line)
}
func readScanReply(cn *pool.Conn) ([]string, uint64, error) {
n, err := readArrayHeader(cn)
if err != nil {
return nil, 0, err
}
if n != 2 {
return nil, 0, fmt.Errorf("redis: got %d elements in scan reply, expected 2", n)
}
b, err := readBytesReply(cn)
if err != nil {
return nil, 0, err
}
cursor, err := strconv.ParseUint(bytesToString(b), 10, 64)
if err != nil {
return nil, 0, err
}
n, err = readArrayHeader(cn)
if err != nil {
return nil, 0, err
}
keys := make([]string, n)
for i := int64(0); i < n; i++ {
key, err := readStringReply(cn)
if err != nil {
return nil, 0, err
}
keys[i] = key
}
return keys, cursor, err
}
func sliceParser(cn *pool.Conn, n int64) (interface{}, error) {
// Implements proto.MultiBulkParse
func sliceParser(rd *proto.Reader, n int64) (interface{}, error) {
vals := make([]interface{}, 0, n)
for i := int64(0); i < n; i++ {
v, err := readReply(cn, sliceParser)
v, err := rd.ReadReply(sliceParser)
if err == Nil {
vals = append(vals, nil)
} else if err != nil {
@ -457,10 +29,11 @@ func sliceParser(cn *pool.Conn, n int64) (interface{}, error) {
return vals, nil
}
func intSliceParser(cn *pool.Conn, n int64) (interface{}, error) {
// Implements proto.MultiBulkParse
func intSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
ints := make([]int64, 0, n)
for i := int64(0); i < n; i++ {
n, err := readIntReply(cn)
n, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
@ -469,10 +42,11 @@ func intSliceParser(cn *pool.Conn, n int64) (interface{}, error) {
return ints, nil
}
func boolSliceParser(cn *pool.Conn, n int64) (interface{}, error) {
// Implements proto.MultiBulkParse
func boolSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
bools := make([]bool, 0, n)
for i := int64(0); i < n; i++ {
n, err := readIntReply(cn)
n, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
@ -481,10 +55,11 @@ func boolSliceParser(cn *pool.Conn, n int64) (interface{}, error) {
return bools, nil
}
func stringSliceParser(cn *pool.Conn, n int64) (interface{}, error) {
// Implements proto.MultiBulkParse
func stringSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
ss := make([]string, 0, n)
for i := int64(0); i < n; i++ {
s, err := readStringReply(cn)
s, err := rd.ReadStringReply()
if err == Nil {
ss = append(ss, "")
} else if err != nil {
@ -496,10 +71,11 @@ func stringSliceParser(cn *pool.Conn, n int64) (interface{}, error) {
return ss, nil
}
func floatSliceParser(cn *pool.Conn, n int64) (interface{}, error) {
// Implements proto.MultiBulkParse
func floatSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
nn := make([]float64, 0, n)
for i := int64(0); i < n; i++ {
n, err := readFloatReply(cn)
n, err := rd.ReadFloatReply()
if err != nil {
return nil, err
}
@ -508,15 +84,16 @@ func floatSliceParser(cn *pool.Conn, n int64) (interface{}, error) {
return nn, nil
}
func stringStringMapParser(cn *pool.Conn, n int64) (interface{}, error) {
// Implements proto.MultiBulkParse
func stringStringMapParser(rd *proto.Reader, n int64) (interface{}, error) {
m := make(map[string]string, n/2)
for i := int64(0); i < n; i += 2 {
key, err := readStringReply(cn)
key, err := rd.ReadStringReply()
if err != nil {
return nil, err
}
value, err := readStringReply(cn)
value, err := rd.ReadStringReply()
if err != nil {
return nil, err
}
@ -526,15 +103,16 @@ func stringStringMapParser(cn *pool.Conn, n int64) (interface{}, error) {
return m, nil
}
func stringIntMapParser(cn *pool.Conn, n int64) (interface{}, error) {
// Implements proto.MultiBulkParse
func stringIntMapParser(rd *proto.Reader, n int64) (interface{}, error) {
m := make(map[string]int64, n/2)
for i := int64(0); i < n; i += 2 {
key, err := readStringReply(cn)
key, err := rd.ReadStringReply()
if err != nil {
return nil, err
}
n, err := readIntReply(cn)
n, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
@ -544,19 +122,20 @@ func stringIntMapParser(cn *pool.Conn, n int64) (interface{}, error) {
return m, nil
}
func zSliceParser(cn *pool.Conn, n int64) (interface{}, error) {
// Implements proto.MultiBulkParse
func zSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
zz := make([]Z, n/2)
for i := int64(0); i < n; i += 2 {
var err error
z := &zz[i/2]
z.Member, err = readStringReply(cn)
z.Member, err = rd.ReadStringReply()
if err != nil {
return nil, err
}
z.Score, err = readFloatReply(cn)
z.Score, err = rd.ReadFloatReply()
if err != nil {
return nil, err
}
@ -564,10 +143,11 @@ func zSliceParser(cn *pool.Conn, n int64) (interface{}, error) {
return zz, nil
}
func clusterSlotsParser(cn *pool.Conn, slotNum int64) (interface{}, error) {
slots := make([]ClusterSlot, slotNum)
for slotInd := 0; slotInd < len(slots); slotInd++ {
n, err := readArrayHeader(cn)
// Implements proto.MultiBulkParse
func clusterSlotsParser(rd *proto.Reader, n int64) (interface{}, error) {
slots := make([]ClusterSlot, n)
for i := 0; i < len(slots); i++ {
n, err := rd.ReadArrayLen()
if err != nil {
return nil, err
}
@ -576,19 +156,19 @@ func clusterSlotsParser(cn *pool.Conn, slotNum int64) (interface{}, error) {
return nil, err
}
start, err := readIntReply(cn)
start, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
end, err := readIntReply(cn)
end, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
nodes := make([]ClusterNode, n-2)
for nodeInd := 0; nodeInd < len(nodes); nodeInd++ {
n, err := readArrayHeader(cn)
for j := 0; j < len(nodes); j++ {
n, err := rd.ReadArrayLen()
if err != nil {
return nil, err
}
@ -597,27 +177,27 @@ func clusterSlotsParser(cn *pool.Conn, slotNum int64) (interface{}, error) {
return nil, err
}
ip, err := readStringReply(cn)
ip, err := rd.ReadStringReply()
if err != nil {
return nil, err
}
port, err := readIntReply(cn)
port, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
nodes[nodeInd].Addr = net.JoinHostPort(ip, strconv.FormatInt(port, 10))
nodes[j].Addr = net.JoinHostPort(ip, strconv.FormatInt(port, 10))
if n == 3 {
id, err := readStringReply(cn)
id, err := rd.ReadStringReply()
if err != nil {
return nil, err
}
nodes[nodeInd].Id = id
nodes[j].Id = id
}
}
slots[slotInd] = ClusterSlot{
slots[i] = ClusterSlot{
Start: int(start),
End: int(end),
Nodes: nodes,
@ -626,29 +206,29 @@ func clusterSlotsParser(cn *pool.Conn, slotNum int64) (interface{}, error) {
return slots, nil
}
func newGeoLocationParser(q *GeoRadiusQuery) multiBulkParser {
return func(cn *pool.Conn, n int64) (interface{}, error) {
func newGeoLocationParser(q *GeoRadiusQuery) proto.MultiBulkParse {
return func(rd *proto.Reader, n int64) (interface{}, error) {
var loc GeoLocation
var err error
loc.Name, err = readStringReply(cn)
loc.Name, err = rd.ReadStringReply()
if err != nil {
return nil, err
}
if q.WithDist {
loc.Dist, err = readFloatReply(cn)
loc.Dist, err = rd.ReadFloatReply()
if err != nil {
return nil, err
}
}
if q.WithGeoHash {
loc.GeoHash, err = readIntReply(cn)
loc.GeoHash, err = rd.ReadIntReply()
if err != nil {
return nil, err
}
}
if q.WithCoord {
n, err := readArrayHeader(cn)
n, err := rd.ReadArrayLen()
if err != nil {
return nil, err
}
@ -656,11 +236,11 @@ func newGeoLocationParser(q *GeoRadiusQuery) multiBulkParser {
return nil, fmt.Errorf("got %d coordinates, expected 2", n)
}
loc.Longitude, err = readFloatReply(cn)
loc.Longitude, err = rd.ReadFloatReply()
if err != nil {
return nil, err
}
loc.Latitude, err = readFloatReply(cn)
loc.Latitude, err = rd.ReadFloatReply()
if err != nil {
return nil, err
}
@ -670,11 +250,11 @@ func newGeoLocationParser(q *GeoRadiusQuery) multiBulkParser {
}
}
func newGeoLocationSliceParser(q *GeoRadiusQuery) multiBulkParser {
return func(cn *pool.Conn, n int64) (interface{}, error) {
func newGeoLocationSliceParser(q *GeoRadiusQuery) proto.MultiBulkParse {
return func(rd *proto.Reader, n int64) (interface{}, error) {
locs := make([]GeoLocation, 0, n)
for i := int64(0); i < n; i++ {
v, err := readReply(cn, newGeoLocationParser(q))
v, err := rd.ReadReply(newGeoLocationParser(q))
if err != nil {
return nil, err
}
@ -693,7 +273,7 @@ func newGeoLocationSliceParser(q *GeoRadiusQuery) multiBulkParser {
}
}
func commandInfoParser(cn *pool.Conn, n int64) (interface{}, error) {
func commandInfoParser(rd *proto.Reader, n int64) (interface{}, error) {
var cmd CommandInfo
var err error
@ -701,36 +281,36 @@ func commandInfoParser(cn *pool.Conn, n int64) (interface{}, error) {
return nil, fmt.Errorf("redis: got %d elements in COMMAND reply, wanted 6")
}
cmd.Name, err = readStringReply(cn)
cmd.Name, err = rd.ReadStringReply()
if err != nil {
return nil, err
}
arity, err := readIntReply(cn)
arity, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
cmd.Arity = int8(arity)
flags, err := readReply(cn, stringSliceParser)
flags, err := rd.ReadReply(stringSliceParser)
if err != nil {
return nil, err
}
cmd.Flags = flags.([]string)
firstKeyPos, err := readIntReply(cn)
firstKeyPos, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
cmd.FirstKeyPos = int8(firstKeyPos)
lastKeyPos, err := readIntReply(cn)
lastKeyPos, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
cmd.LastKeyPos = int8(lastKeyPos)
stepCount, err := readIntReply(cn)
stepCount, err := rd.ReadIntReply()
if err != nil {
return nil, err
}
@ -746,10 +326,10 @@ func commandInfoParser(cn *pool.Conn, n int64) (interface{}, error) {
return &cmd, nil
}
func commandInfoSliceParser(cn *pool.Conn, n int64) (interface{}, error) {
func commandInfoSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
m := make(map[string]*CommandInfo, n)
for i := int64(0); i < n; i++ {
v, err := readReply(cn, commandInfoParser)
v, err := rd.ReadReply(commandInfoParser)
if err != nil {
return nil, err
}

57
parser_test.go
View File

@ -1,57 +0,0 @@
package redis
import (
"bufio"
"bytes"
"testing"
"gopkg.in/redis.v4/internal/pool"
)
func BenchmarkParseReplyStatus(b *testing.B) {
benchmarkParseReply(b, "+OK\r\n", nil, false)
}
func BenchmarkParseReplyInt(b *testing.B) {
benchmarkParseReply(b, ":1\r\n", nil, false)
}
func BenchmarkParseReplyError(b *testing.B) {
benchmarkParseReply(b, "-Error message\r\n", nil, true)
}
func BenchmarkParseReplyString(b *testing.B) {
benchmarkParseReply(b, "$5\r\nhello\r\n", nil, false)
}
func BenchmarkParseReplySlice(b *testing.B) {
benchmarkParseReply(b, "*2\r\n$5\r\nhello\r\n$5\r\nworld\r\n", sliceParser, false)
}
func benchmarkParseReply(b *testing.B, reply string, p multiBulkParser, wanterr bool) {
buf := &bytes.Buffer{}
for i := 0; i < b.N; i++ {
buf.WriteString(reply)
}
cn := &pool.Conn{
Rd: bufio.NewReader(buf),
Buf: make([]byte, 4096),
}
b.ResetTimer()
for i := 0; i < b.N; i++ {
_, err := readReply(cn, p)
if !wanterr && err != nil {
b.Fatal(err)
}
}
}
func BenchmarkAppendArgs(b *testing.B) {
buf := make([]byte, 0, 64)
args := []interface{}{"hello", "world", "foo", "bar"}
for i := 0; i < b.N; i++ {
appendArgs(buf, args)
}
}

3
pipeline.go
View File

@ -4,6 +4,7 @@ import (
"sync"
"sync/atomic"
"gopkg.in/redis.v4/internal/errors"
"gopkg.in/redis.v4/internal/pool"
)
@ -99,7 +100,7 @@ func execCmds(cn *pool.Conn, cmds []Cmder) ([]Cmder, error) {
if firstCmdErr == nil {
firstCmdErr = err
}
if shouldRetry(err) {
if errors.IsRetryable(err) {
failedCmds = append(failedCmds, cmd)
}
}

2
pipeline_test.go
View File

@ -156,6 +156,8 @@ var _ = Describe("Pipelining", func() {
wg.Add(N)
for i := 0; i < N; i++ {
go func() {
defer GinkgoRecover()
pipeline.Ping()
wg.Done()
}()

3
pubsub.go
View File

@ -6,6 +6,7 @@ import (
"time"
"gopkg.in/redis.v4/internal"
"gopkg.in/redis.v4/internal/errors"
"gopkg.in/redis.v4/internal/pool"
)
@ -248,7 +249,7 @@ func (c *PubSub) receiveMessage(timeout time.Duration) (*Message, error) {
for {
msgi, err := c.ReceiveTimeout(timeout)
if err != nil {
if !isNetworkError(err) {
if !errors.IsNetwork(err) {
return nil, err
}

10
redis.go
View File

@ -5,9 +5,13 @@ import (
"log"
"gopkg.in/redis.v4/internal"
"gopkg.in/redis.v4/internal/errors"
"gopkg.in/redis.v4/internal/pool"
)
// Redis nil reply, .e.g. when key does not exist.
const Nil = errors.Nil
func SetLogger(logger *log.Logger) {
internal.Logger = logger
}
@ -38,7 +42,7 @@ func (c *baseClient) conn() (*pool.Conn, error) {
}
func (c *baseClient) putConn(cn *pool.Conn, err error, allowTimeout bool) bool {
if isBadConn(err, allowTimeout) {
if errors.IsBadConn(err, allowTimeout) {
_ = c.connPool.Remove(cn, err)
return false
}
@ -97,7 +101,7 @@ func (c *baseClient) Process(cmd Cmder) error {
if err := writeCmd(cn, cmd); err != nil {
c.putConn(cn, err, false)
cmd.setErr(err)
if err != nil && shouldRetry(err) {
if err != nil && errors.IsRetryable(err) {
continue
}
return err
@ -105,7 +109,7 @@ func (c *baseClient) Process(cmd Cmder) error {
err = cmd.readReply(cn)
c.putConn(cn, err, readTimeout != nil)
if err != nil && shouldRetry(err) {
if err != nil && errors.IsRetryable(err) {
continue
}

7
safe.go
View File

@ -1,7 +0,0 @@
// +build appengine
package redis
func bytesToString(b []byte) string {
return string(b)
}

9
tx.go
View File

@ -5,9 +5,14 @@ import (
"fmt"
"gopkg.in/redis.v4/internal"
ierrors "gopkg.in/redis.v4/internal/errors"
"gopkg.in/redis.v4/internal/pool"
"gopkg.in/redis.v4/internal/proto"
)
// Redis transaction failed.
const TxFailedErr = ierrors.RedisError("redis: transaction failed")
var errDiscard = errors.New("redis: Discard can be used only inside Exec")
// Tx implements Redis transactions as described in
@ -166,7 +171,7 @@ func (c *Tx) execCmds(cn *pool.Conn, cmds []Cmder) error {
}
// Parse number of replies.
line, err := readLine(cn)
line, err := cn.Rd.ReadLine()
if err != nil {
if err == Nil {
err = TxFailedErr
@ -174,7 +179,7 @@ func (c *Tx) execCmds(cn *pool.Conn, cmds []Cmder) error {
setCmdsErr(cmds[1:len(cmds)-1], err)
return err
}
if line[0] != '*' {
if line[0] != proto.ArrayReply {
err := fmt.Errorf("redis: expected '*', but got line %q", line)
setCmdsErr(cmds[1:len(cmds)-1], err)
return err

14
unsafe.go
View File

@ -1,14 +0,0 @@
// +build !appengine
package redis
import (
"reflect"
"unsafe"
)
func bytesToString(b []byte) string {
bytesHeader := (*reflect.SliceHeader)(unsafe.Pointer(&b))
strHeader := reflect.StringHeader{bytesHeader.Data, bytesHeader.Len}
return *(*string)(unsafe.Pointer(&strHeader))
}